Stained glass window, Iran

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 15°.
• Contains 6 regular two-pointed star polygons with vertex angle of 60°.
• Contains one regular four-pointed star polygon with vertex angle of 120° - composed of kites.
• Contains one regular 12-pointed star polygon with vertex angle of 60° - composed of kites.
• There are four non-regular reflective tiles (including 3 kites) and three reflective pairs.
• The tiling does not satisfy the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 561 polygons.

1. Vol II (not recorded) of E Booth-Clibborn. The splendour of Iran, London, 2001. ISBN 186154011. [booth] {2 vol}

v54